Garage jack



March 26, 1935. I T. J. MCCARTHY 1,995,93

GARAGE JACK Filed June 12, 1934 2 Sheets-Sheet 1 INVEN TOR,

BY 6 WW 1) r M A TTORNEYS.

March 26, 1935. I T, J, MCCARTHY 1,995,937

GARAGE JACK Filed June 12/ 1934 2 Sheets-Sheet 2 IN VEN TOR,

8 Tia/270.9 JNV" ja v JMIL'QJ A TTORNEYS.

Patented Mar. 26, 1935 =1 1; Y 'Ma'cOjac Compmm N tionfeof'Newidcrsey j' I ntwan June 12'', 1

A still further object of v-thej inventionis the construction of" a wheeled garage jaclrthat can 'be quickly-positioned under a motor .vehicle'ir-and which also carr berquicklyoperaited for efiiciently raisingor lo'weririgthe-vehicle; '1- With the 'foregoingjgand other objectszin View, my invention'comprises certain novel constructions. combinations andiarrangements'of. parts as will? be hereinafter fully described, illustrated in the accompanying drawingspan'd more particularlypointediout in the appended claims. t, In the-drawings: Figure 1 is avertical, central,.:1ongitudinal sec- .tional view' of .a. mechanism constructed; in accor-dance with the present" inventiomJwhil'e:

Figure 2' is a top 'planviewiaof thesam'e'p. Figure '3 is. a sectional View taken 'on line 3".-3,

' Fig. l, and lookingi'n'the directi'onrof. the arrows. 30 ,Figure 4 is a fragmentary perspective viewof the mechanism, showing-particularly the saddle and the saddle plate. Y l 111 L Figured isv a fragmentary; perspective view of the mechanism showing'particularly the rear end and thebardevice.

Figure 6 is a plan viewof the bar device.

Referring to the drawings'by numerals, =ldesignates the. frame as. a whole; said frame is provided with two sides 2, Fig. "3. The frame l'is provided with stub axles-.3 on which are'inounted master wheels 4. On the forward end of frame 1 are two 'swivelledwhee1s5 A swivelled'w-heel 6.

(Fig. 1) is located on the rearof the frame, preferablyin the middle thereof. 7 A segmental-worm gear lisijournalled on the upper portion of the frame 1 atSQand this gear has its Worm teeth. 9 gn eshingfiwith worm 10 .(Fig. 1). This worm 10 is suitably moemee on frame land is connected. by a universal joint device 11 with the handleor operating rod 12. The handle 12 can be of any desired length, for operating the jack with ease, irrespective as to the type of motor vehicle being operated upon, and to assist in the operation Ipreferably place on'whichto rest an axle'orapart of a;

ewark, N. J., a corpora-" 5 34;, serial No. 73mm ball-like end; 15 of the worm-10 (-Eigqlfiiiitih outwardly extending lugs 16. .Ifhese lugs 16 are .1;

engaged by the yoke-like member 1''! formedon the inner end of the handle 12., 1

device 11 '7 comprises i he The worm gear 7 is provided mthan upwardly extending short shoulder 711 ,rounded on. top;as

at 7b.,Fig. 4. The saddle 18 is pivotallygmounted at '19 on the u per end of shoulder Fla oi the gear 7. This saddle I 1 8;isprovided--with'two sid'es 2 0 and with a flat top21. Integral -with top"2;l

is a round head 22. In this head 22 is anannular groove 23; A saddle plate 24 ismountedion ,head 22 and extends downwardly aroundsaid head. A set screw 25- (Fig;- 1) extends -=through the lower part'of the saddle plate 24 and-into groove; 23- detachably securing; the plate in? position,v Thesaddle: 18 is provided. with'an auxiliary saddle rest 26-. This rest 26-may lee-used vehicleif the operator sodesires.

Two short guiding links 27 areused, ea'clrha-ving'a biiurcatedinnerendZS; Therouterend-s'of f shortl-inks 27 are pivptallyniounted, at-2S}, on

motor the lower end of the saddle 18.: The--bifuroated ends 28 of said short links straddlegthe-sides 2 of frame "and are pivotally-"mounted on [said housing or cover, 31 Fig. 1') is placed over part of 'themechanism," against the-upperv sides at 30.- I ,Asuitable portion oi the frame 1. v The inner ends of sides 2 are provided. with teeth 32.jA bar device 33 ismountedon handle 2. Thisjbar, device comprises a hub 34;thatsur.- rounds the handle, with outwardly-extending arms 35 at opposite sides of thehub. Eacharm 35 is provided on its ,innerface: with;an ,.o utwardly extending. tooth 26 thatis adaptedto engage'the' teeth onthe ends of the framei' aIn apertures 37' of arms 25, I place thefinner ends of coil spring 38' with theouter iendsof said springs fastenedoverthe pins'39, on. the sides of i These springs38 holdftheteeth 'of a the bardevice in engagement with the teeth: on"

the frame.

the frame, whereby the handleis held in-an inclined adjusted position. Of'course, the hair-- 'dlej-by-this simple vfastening device may al'sobe retained a horizontal position; as a wider range of adjustment-can be obtained for the handle by my novel bar. device lockingvmeans. 34 can be slid outwardly-on handle 12, toperrnit the handle to swing to the desired position.

Then upon releasing the hub, springs 33 wi11- The hub 60 a saddle plate movably mounted on said worm gear, manually operatedmeans including a handle for operating said iw'orm gear, and locking means on saidhandle and frame for lockingthehandle'in 'move' the teeth of the bar device intocontact with the teeth on the frame, thereby holding the handle adjusted; It is obvious that the universal joint device 11 permits .free adjustment ofthe handle 2, in a verticalplane.

h After the jack is placed under the motor vehicle, with the saddle plate 24 in position for lifting the load, and the handle 2' has been adjustedzto suit the individual operator, then upon rotating the handle, the gear 7 will be revolved around its pivot 8,thereby raising or lowering the saddle 7' as the case may be, and during this' v raising or lowering of the'saddle, the saddle plate '24 is always ,kept in a true horizontal position 15' by reason of the action of vthe short guiding links 27. The lift ofthe gear '7, on the saddle 18 is always directly under the saddle plate, iv-

ing a great power to the, mechanism, with "a' minimum number of parts, as ,well'as'a minilength or size of the parts of the unit/In -o ther words, 'I have produced a veryfcompactand eflicient mechanism for lifting, or lowering aloud.

The bifurcated structure 28' of the short links 27 assist in'retainingthe saddle'la from moving too-far downward, for into contact with the sup- 7 port or floor upon which the jack is resting; This is desirable-because in jack the gear 7 is of a -ployed,, for accomplishing this efiicient function and operation as disclosedin my novel mechaverycompac't; structure,;and is'ready to act im- 'mediately upon turningythe handleto lift the i 7 load;: the'guiding links 27 also serving to hold the saddle ina perfect perpendicular plane; right over the pivot on-the gear 7, thereby properly positioning the saddle plate at all times with the minimur'n numberof parts and material em While I haveldescribed-the preferredjembodiment of my'invention and illustrated the same in the accompanying drawings,- certain minor changes or alterations may appear to one skilled inthe'art to whichlthisinvention relates,during the extensive manufacture of the same, and I,

therefore, reserve the right to make such changes or alterations as shall fairly fall within the scope of the appended claims M 'i 7 1' f v 1. In .a mechanism ofthe class described, the combination of a frame, a worm gear. movably 'mounted on saidframe, a saddle proyidedwith a saddie'plate movablymounted on said worm gear," manually operated mean'sincluding a handle for operatingsaid' worm gear, and alocking device V slidably mounted on the -han'dleand engaging -means on "said frame for locking the handle in different positions.-

" am a mechanism of the class described, the

combinationof a frame, a' worm gear movably mounted on said frame, a saddle provided with, a

different adjusted positions. r n

3; Inia mechanism of the class described, the

i combination of a frame,- a "worm gearmovably mounted on said frame, a saddleplate-carryin'g saddle movably mounted on said worm gear,

:manuall operated means including a handle for operating-said worm gear, and lockingmeans,

, on said handle andframe for holding said handle in an adjusted position.v

4. In a mechanism of the class described, the combination of a frame,a worm gear. movably' mounted on said frame, a saddle-p1ate-carryingsaddle mounted on said worm gear, manually V operated means includingan' adjustable handle j for operating said worm gear, andgmeans cooperating with said adjustable handle and a different adjusted positions. a 1

-5,.,In aLmechanismgoI the class describedthe combination ofja-frame,.a worm gear pivotally V .mounted on said frame, a saddle provided with portion of said frame for permitting adjustmentv of the handle and the retention of the handle in I a saddle plate pivotally mounted on said worm' gear," manually operated means' including a handle, on said ,frame jfo'r operating said worm gear, andjadjustable locking means onsaid handie and frame forholdirig thefhandle in adjusted positions. a

6. In amechanism the described, the

I combinationtof a frame, Faworm gear? pivotally "mounted ongisaid frame, ,agsaddle provided with a saddlplate pivotallymouhteddnfisalid worm gear; manually operatedi "means including a handle on said frame{for-operating, said worm gear, teeth formedaon said frame, andf'a sliding bar device on said-handle and provided with teeth for engaging the" teeth of theirametfor I 7. 'In a mechanism of'the class described, the

combination of a frame, "a worm gear pivotally mounted on said'fraine,fa:jsaddle. provided with a saddle plate pivotally mounted on said worm 'gear, said frame providedrwithsides, saidsides provided around ,their inner ends with rows of teeth, v.manually operated means including a r handle on' said framelfor operating "said worm outer ends'to the outer endsof said 'arms and at their inner ends to saidfpins, substantially as 'shown and described; v i ,7 8. In ameohanismjof the class described, thecombination of a frame,,aworm gear pivotally- Emounted on said-frameya saddle provided with a saddle plate'pivotally mounted on said worm gear, manuallyoperated means including a' universal joint device andrhandle for operating said worm gear, and a locking: device on said handle'iand frame for holding said handle in adjusted 'posi-i I tions. 1 a

9. In a'mechanism of the class described, the combination ofa frame, a worm gear pivotally- :rnountedon saidframe, a saddle providedwitha saddleplate pivotally mounted on saidworm gear,v a

manually operated means including a universal joint device and handle operating said worm gear, and alocking deviceslidably mounted on the handle and engaging'jmeans on said frame for locking the handle in diiferent-vertical' posi-' tions. v v THOMAS J. McCARfIHY. 

